Abstract
Biodegradable and bioactive β-tricalcium phosphate (β-TCP) coatings were prepared on magnesium (Mg) in order to improve its biocompatibility by a chemical method. The tensile bonding strength of β-TCP coating and Mg substrate was measured by the standard adhesion test (ISO 13779-4). And the cytocompatibility of β-TCP coated Mg was studied by using human osteoblast-like MG63 cells. It was found that the MG63 cells could grow well on the surface of β-TCP coated Mg and the cell viability on β-TCP coated Mg was above 80% during the cocultivation of MG63 cells and β-TCP coated Mg for 10 days, indicating no cytotoxicity. It was concluded that the β-TCP coated Mg had good cytocompatibility. The degradation of Mg substrate with β-TCP coating in vitro was studied in detail by XRD, EDX, SEM, and ICP. The results showed that a bone-like apatite continually formed on the surface of the sample with the degradation of both Mg substrate and β-TCP coating in Hank’s solution (a simulated body fluid). The biodegradation mechanism was preliminarily analyzed in the paper.
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Acknowledgments
This work was partly supported by a fund from Chinese Academy of Sciences, Applied Research of Bioactive Bone Implanted Materials (No. KGCX2-YW-207).
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Geng, F., Tan, L.L., Jin, X.X. et al. The preparation, cytocompatibility, and in vitro biodegradation study of pure β-TCP on magnesium. J Mater Sci: Mater Med 20, 1149–1157 (2009). https://doi.org/10.1007/s10856-008-3669-x
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DOI: https://doi.org/10.1007/s10856-008-3669-x